Dehydroacetic acid - ≥98% , CAS No.520-45-6

CAS: 520-45-6 Cat. No.: D106379 Molecular Weight: 168.15 Beilstein Registry Number: 6129 EC Number: 208-293-9
AVAILABLE TO ORDER
GRADE & PURITY ≥98%
Synonyms
DHA | 2H-Pyran-2, 3-acetyl-6-methyl- | 3-Acetyl-6-methyl-2H-pyran-2,4(3H)-dione, enol form | 4-Hexenoic acid, 2-acetyl-5-hydroxy-3-oxo-, .delta.-lactone | 4-Hexenoic acid, .delta.-lactone | Q63088091 | D0039 | NSC8770 | NSC-8770 | WLN: T6OV DV CHJ CV1 F1
Storage
Room temperature
Shipped In
Normal
 ·  off list, applied to all prices below.
Size
Status
Price
Qty
25g
D106379-25g
7

$15.90

$23.90
Save $8.00 (33.47%)
100g
D106379-100g
9

$21.90

$32.90
Save $11.00 (33.43%)
500g
D106379-500g
1

$26.90

$40.90
Save $14.00 (34.23%)
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Why this grade

≥98% for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

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Storage & shipping

Room temperature Ships Normal Check lot-specific COA for exact specifications.

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Quality documents

SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.

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Literature proof

Cited in 8 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Specifications

Synonyms
DHA | 2H-Pyran-2, 3-acetyl-6-methyl- | 3-Acetyl-6-methyl-2H-pyran-2, 4(3H)-dione, enol form | 4-Hexenoic acid, 2-acetyl-5-hydroxy-3-oxo-, .delta.-lactone | 4-Hexenoic acid, .delta.-lactone | Q63088091 | D0039 | NSC8770 | NSC-8770 | WLN: T6OV DV CHJ CV1 F1
Specifications & Purity
≥98%
Storage
Room temperature
Shipped In
Normal
Purity
≥98%
Names and Identifiers
Pubchem Sid488187690
Pubchem Sid Urlhttps://pubchem.ncbi.nlm.nih.gov/substance/488187690
Canonical SmilesCC1=CC(=O)C(C(=O)O1)C(=O)C
IUPAC Name3-acetyl-6-methylpyran-2,4-dione
InChIKeyPGRHXDWITVMQBC-UHFFFAOYSA-N
INCHI1S/C8H8O4/c1-4-3-6(10)7(5(2)9)8(11)12-4/h3,7H,1-2H3
Isomeric SMILES CC1=CC(=O)C(C(=O)O1)C(=O)C
WGK Germany 1
RTECS UP8050000
Alternate CAS 771-03-9
Molecular Weight 168.15
Beilstein 6129
Reaxy-Rn 6129
Reaxys-RN_link_address https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=6129&ln=

Documentation

📋 Safety Data Sheet (SDS)

Comprehensive hazard, handling, storage, and regulatory compliance document.

Download SDS →

✅ Certificate of Analysis (COA)

Lot-specific quality data. Enter your lot number to retrieve the exact COA.

Look up COA →

📊 Datasheet

Quick-reference summary of product specifications and applications.

View datasheet →

🔬 Specification Sheet

Full quality attributes and acceptance criteria for this grade.

View spec sheet →

Advanced Data

Taxonomic Classification

Taxonomy Tree

KingdomOrganic compounds
SuperclassOrganoheterocyclic compounds
ClassPyrans
SubclassPyranones and derivatives
Intermediate Tree Nodes Not available
Direct ParentDihydropyranones
Alternative Parents Beta-diketones  Enol esters  Lactones  Cyclic ketones  Oxacyclic compounds  Monocarboxylic acids and derivatives  Organic oxides  Hydrocarbon derivatives  
Molecular FrameworkAliphatic heteromonocyclic compounds
Substituents Dihydropyranone - 1,3-diketone - 1,3-dicarbonyl compound - Enol ester - Cyclic ketone - Lactone - Ketone - Carboxylic acid ester - Oxacycle - Monocarboxylic acid or derivatives - Carboxylic acid derivative - Hydrocarbon derivative - Carbonyl group - Organooxygen compound - Organic oxide - Organic oxygen compound - Aliphatic heteromonocyclic compound
DescriptionThis compound belongs to the class of organic compounds known as dihydropyranones. These are compounds containing a hydrogenated pyran ring which bears a ketone, and contains one double bond.
External Descriptors Not available
3D Structure
Interactive Chemical Structure Model





Certificates(CoA,COO,BSE/TSE and Analysis Chart)
C of A & Other Certificates(BSE/TSE, COO):
Analytical Chart:

Find and download the COA for your product by matching the lot number on the packaging.

12 results found

Lot NumberCertificate TypeDateItem
J2122472Certificate of AnalysisAug 11, 2025 D106379
I2414082Certificate of AnalysisSep 26, 2024 D106379
F2421213Certificate of AnalysisJun 06, 2024 D106379
F2421214Certificate of AnalysisJun 06, 2024 D106379
J2524019Certificate of AnalysisJun 06, 2024 D106379
C2019125Certificate of AnalysisJan 05, 2024 D106379
C23311615Certificate of AnalysisApr 10, 2023 D106379
B1928080Certificate of AnalysisDec 12, 2022 D106379
H2330012Certificate of AnalysisDec 12, 2022 D106379
F2228132Certificate of AnalysisJul 03, 2022 D106379
C23311614Certificate of AnalysisOct 26, 2021 D106379
H2308269Certificate of AnalysisOct 26, 2021 D106379

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Chemical and Physical Properties
SolubilitySoluble in Methanol, Ether, Benzene, Acetone, Ethanol and Carbon tetrachloride;Slightly soluble in Propylene glycol
Flash Point(°F)314.6 °F
Flash Point(°C)157 °C
Boil Point(°C)269.9°C
Melt Point(°C)109-111°C
Molecular Weight168.150 g/mol
XLogP30.300
Hydrogen Bond Donor Count0
Hydrogen Bond Acceptor Count4
Rotatable Bond Count1
Exact Mass168.042 Da
Monoisotopic Mass168.042 Da
Topological Polar Surface Area60.400 Ų
Heavy Atom Count12
Formal Charge0
Complexity287.000
Isotope Atom Count0
Defined Atom Stereocenter Count0
Undefined Atom Stereocenter Count1
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
The total count of all stereochemical bonds0
Covalently-Bonded Unit Count1
Documents & Articles
Citations of This Product
References
1. Wen-tao Li, Dong-hong Nan, Guan Zhang, Kai Li, Yan-qin Huang, Qiang Lu, Li-juan Gao, Wan-zhao Huang, Xiao-feng Han, Shan-wei Ma.  (2022)  9,10-dihyroanthrancene assisted catalytic pyrolysis of bagasse over N-doped activated carbon to enhance 4-ethyl phenol production.  JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS,      [PMID:] [10.1016/j.jaap.2022.105572]
2. Xiao-Man Fan, Jia-Jia Shen, Yuan-Yuan Xu, Jian Gao, Ye-Wang Zhang.  (2021)  Metabolic integration of azide functionalized glycan on Escherichia coli cell surface for specific covalent immobilization onto magnetic nanoparticles with click chemistry.  BIORESOURCE TECHNOLOGY,      [PMID:33450627] [10.1016/j.biortech.2021.124689]
3. Zhao Yueyang, Long Zhimin, Ding Ya, Jiang Tingting, Liu Jiajun, Li Yimin, Liu Yuanjie, Peng Xuehua, Wang Kejian, Feng Min, He Guiqiong.  (2020)  Dihydroartemisinin Ameliorates Learning and Memory in Alzheimer’s Disease Through Promoting Autophagosome-Lysosome Fusion and Autolysosomal Degradation for Aβ Clearance.  Frontiers in Aging Neuroscience,      [PMID:32210783] [10.3389/fnagi.2020.00047]
4. Meng-Yao Zhuang, Xiao-Ping Jiang, Xiao-Min Ling, Meng-Qiu Xu, Yi-Hao Zhu, Ye-Wang Zhang.  (2018)  Immobilization of glycerol dehydrogenase and NADH oxidase for enzymatic synthesis of 1,3-dihydroxyacetone with in situ cofactor regeneration.  JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY,  93  (8): (2351-2358).  [PMID:] [10.1002/jctb.5579]
5. Xiaomei Ning, Hao Yu, Feng Peng, Hongjuan Wang.  (2015)  Pt nanoparticles interacting with graphitic nitrogen of N-doped carbon nanotubes: Effect of electronic properties on activity for aerobic oxidation of glycerol and electro-oxidation of CO.  JOURNAL OF CATALYSIS,      [PMID:] [10.1016/j.jcat.2015.02.010]
6. Zili Lei, Huijuan Wu, Yanhong Yang, Qing Hu, Yuting Lei, Wanwan Liu, Ya Nie, Lanxiang Yang, Xueying Zhang, Changyuan Yang, Ting Lin, Fengxue Tong, Jiamin Zhu, Jiao Guo.  (2021)  Dihydroartemisinin improves hypercholesterolemia in ovariectomized mice via enhancing vectorial transport of cholesterol and bile acids from blood to bile.  BIOORGANIC & MEDICINAL CHEMISTRY,      [PMID:34847494] [10.1016/j.bmc.2021.116520]
7. Xueling Zhu, Chen Zhou, Zhicheng Pan, Jinfeng Yuan, Mingwang Pan.  (2024)  Multifunctional Waterborne Polyurethane with Robustness, Adhesiveness, and Self-Healability Based on a Dual Cross-Linked Network Containing Multiple Dynamic Bonds.  ACS Applied Polymer Materials,      [PMID:] [10.1021/acsapm.4c02212]
8. Leijun Xu, Yao Zhang, Jianfeng Chen, Xue Bai, Weili Mao.  (2026)  Wide-range quantitative detection of Dehydroacetic acid via terahertz metamaterial sensor integrated with support vector regression.  SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY,      [PMID:] [10.1016/j.saa.2026.127760]
Solution Calculators
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